<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>6.更新时的一个问题</title>
		<!-- 引入开发版本的Vue -->
		<script type="text/javascript" src="../js/vue.js"></script>
	</head>
	<body>
		<!-- 准备好一个容器-->
		<div id="root">
			<h2>人员列表</h2>
			<button @click="changeDongMei">点我修改马冬梅的信息</button>
			<!-- v-for遍历数组 -->
			<ul>
				<li v-for="p in persons" :key="p.id">
					{{p.name}}-{{p.age}}
				</li>
			</ul>
		</div>
	</body>

	<script type="text/javascript">
		Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。
		
		new Vue({
			el:'#root',
			data:{
				persons:[
					{id:'001',name:'马冬梅',age:19},
					{id:'002',name:'周冬雨',age:30},
					{id:'003',name:'周杰伦',age:15},
					{id:'004',name:'温兆伦',age:17},
				]
			},
			methods: {
				changeDongMei(){
					// this.persons[0].name = '马老师' //奏效
					// this.persons[0].age = 50 //奏效
					// this.persons[0] = {id:'001',name:'马老师',age:50} //不奏效
					this.persons.splice(0,1,{id:'001',name:'马老师',age:50}) =  //奏效
					console.log(this.persons[0].id)
					console.log(this.persons[0].name)
					console.log(this.persons[0].age)
				}
			}
		})
	</script>
</html>